Answer:
Nuclear energy is energy that comes from the nucleus (core) of an atom. Atoms are the particles that make up all objects in the universe. Atoms consist of neutrons, protons, and electrons. Nuclear energy is released from an atom through one of two processes: nuclear fusion or nuclear fission.
Explanation:
B) The positive charge of the protons in the nucleus equals the negative charge in the electron cloud.
(I just took the test and it was right). :)
This statement is true. If the PRIMARY GERM LAYERS fail to form normally, with any defects, during the gastrulation, the embryo could possibly develop any misshapen organs, that will results a birth defect to the infant when born.
Natural selection, if only the best make it the gene pool will have stronger sheep and those sheep breeding will cause even stronger sheep
If an animal is having a well developed skeleton system, a backbone then it belongs to vertebrate. Also, size is an important factor to identify vertebrate and invertebrate.
Explanation:
Vertebrates have a well developed skeleton system and backbone. Their skeleton system is made up of bones and cartilage. While, invertebrates don't have any backbone.
Due to lack of backbone or skeleton system, invertebrates are small in size. As there is no proper mechanism to support large body so invertebrates are small in size and also they move very slowly. This is also a major difference in vertebrate and invertebrate.
Another important difference between vertebrate and invertebrate is that body of vertebrate is covered with some structure like hair, feathers, skin, scales or a combination of these.
These features help to distinguish vertebrate from invertebrate by observing them, no need to dissect.
